<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    //1.多行字符串
    let str1 = `In JavaScript this is 
    not legal.`;
    console.log(str1);

    //2.字符串中插入变量和表达式，变量名写在${}, ${} 中可以放入 JavaScript 表达式。
    let name = 'zhangsan';
    let age = 23;
    let info = `My name is ${name}, I am ${age+1} years old.`;
    console.log(info);

    //3.字符串中调用函数
    function f() {
      return 'have fun!';
    }
    let str2 = `Game start, ${f()}`;
    console.log(str2);//Game start, have fun!
  </script>
</body>
</html>